Process for estimating the channel state in a transmitter of a digital communication system and apparatus for doing the same

Slock, Dirk T M;Guillaud, Maxime;Knopp, Raymond
Patent N°EP1701466

Process for determining the channel characteristics in a digital communication system comprising a first Communication Unit (CUA 100) and a second Communication Unit B (200) communicating through a transmission medium (140). The first unit 100 includes a first signal signal processor (110), and at least one first conversion and RF module (120) and a first antenna (130). The second unit (200) includes a second signal processor (170), and at least one second conversion and RF module (160) and at least one second antenna (150). The process comprises the steps of: executing a first loop based on the successive transmission of a first training information generated by said first unit (100) and the retransmission of a feedback signal combined with a second training information generated by said second unit (200) back to said first unit (100) in order to let said first unit compute relationship characteristics (P A ,P B ) between the transfer function of said first and second conversion and RF modules (120, 160); upon completion of said first loop, executing a second loop for the purpose of continuously deriving the knowledge of the G channel within the emitter of said first Unit (100) from the sole knowledge of the estimated H channel together with said relationship characteristics (P A ,P B ).


DOI
Type:
Brevet
Date:
2006-09-13
Department:
Systèmes de Communication
Eurecom Ref:
2084
Copyright:
© EURECOM. Personal use of this material is permitted. The definitive version of this paper was published in Patent N°EP1701466 and is available at : http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=EP1701466&F=0

PERMALINK : https://www.eurecom.fr/publication/2084